#98775 - 06/09/09 03:29 PM
Re: BAD misfire **update* RESOLVED!!!
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Registered: 04/08/08
Posts: 2647
Loc: Iowa City, IA
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Sorry for trying to be helpful, you're the one throwing parts at it willy-nilly. I'll keep my opinion to myself.
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'99 GTP, L36 bottom, XP cam, Headers, 3.29 gears, FWI, Powrtuner
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#98776 - 06/09/09 03:48 PM
Re: BAD misfire **update* RESOLVED!!!
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Registered: 10/23/07
Posts: 3523
Loc: Milwaukee, WI
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i sent you a pm zalfrin, to keep this thread clean.
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Current: 2004 Dale Jr Monte SS Old: 01 3.2 intercooled GT RIP
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#98777 - 06/09/09 05:56 PM
Re: BAD misfire **update* RESOLVED!!!
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Registered: 01/09/08
Posts: 3476
Loc: Michigan
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Originally posted by '01 GT: well that does me no good now zalfrin as i ordered the l36 this morning. No one responded to this yesterday to tell me about the differences, so nothing i can do now. If it will be that big of a deal I will also order the fuel pump rewire.
steve, i will soon find out if the pump is good or bad. if the pump doesnt fix it, then i will be buying a new regulator. i said something about the L67 pump.
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2000 GTP: XP Cammed/Blown/Nitrous
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#98778 - 06/09/09 06:40 PM
Re: BAD misfire **update* RESOLVED!!!
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Registered: 10/23/07
Posts: 3523
Loc: Milwaukee, WI
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you never gave me reasons as to WHY i should put one in.
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Current: 2004 Dale Jr Monte SS Old: 01 3.2 intercooled GT RIP
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#98779 - 06/09/09 06:50 PM
Re: BAD misfire **update* RESOLVED!!!
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Registered: 01/09/08
Posts: 3476
Loc: Michigan
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Well its kind of obvious why, your boosted now, you should have the boosted fuel pump.
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2000 GTP: XP Cammed/Blown/Nitrous
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#98780 - 06/10/09 04:45 PM
Re: BAD misfire **update* RESOLVED!!!
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Registered: 10/23/07
Posts: 3523
Loc: Milwaukee, WI
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code 0300 just popped up : Engine Misfire Detected
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Current: 2004 Dale Jr Monte SS Old: 01 3.2 intercooled GT RIP
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#98781 - 06/10/09 04:53 PM
Re: BAD misfire **update* RESOLVED!!!
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Registered: 04/08/08
Posts: 2647
Loc: Iowa City, IA
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I wouldn't continue driving it until you get this figured out, p0300 only pops if you get a ton of activity on your knock sensors.
I know shops don't want to work on a modded car, but it seems like you would be able to find one that would just do a fuel pressure test for you so you can make sure you're attacking the right system. Not like you're asking them to do debug work, just a test.
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'99 GTP, L36 bottom, XP cam, Headers, 3.29 gears, FWI, Powrtuner
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#98782 - 06/10/09 04:54 PM
Re: BAD misfire **update* RESOLVED!!!
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Registered: 10/23/07
Posts: 3523
Loc: Milwaukee, WI
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k. im done driving it then.
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Current: 2004 Dale Jr Monte SS Old: 01 3.2 intercooled GT RIP
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#98783 - 06/10/09 04:56 PM
Re: BAD misfire **update* RESOLVED!!!
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Registered: 01/01/08
Posts: 3900
Loc: Ontario, Canada
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Originally posted by Zalfrin: I wouldn't continue driving it until you get this figured out, p0300 only pops if you get a ton of activity on your knock sensors.
I know shops don't want to work on a modded car, but it seems like you would be able to find one that would just do a fuel pressure test for you so you can make sure you're attacking the right system. Not like you're asking them to do debug work, just a test. I thought you were going to keep your opinions to yourself? LOL j/p. Tim, I think you are on the right track with it being a fueling issue. Good luck!
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#98784 - 06/10/09 05:01 PM
Re: BAD misfire **update* RESOLVED!!!
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Member
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Registered: 10/23/07
Posts: 3523
Loc: Milwaukee, WI
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i mean, when i was driving it, the misfire goes away when i press on the throttle. I texted lonezerg and he asked what my ltft's are at idle and they are 16.4. The idle trims have been at that number since i did the swap 2 months ago.
Dang, i wish i knew what i was doing with a tuner, because than i would putz with it myself. I hate having to ask people constantly to help me out with my problems.
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Current: 2004 Dale Jr Monte SS Old: 01 3.2 intercooled GT RIP
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#98785 - 06/10/09 05:02 PM
Re: BAD misfire **update* RESOLVED!!!
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Registered: 04/08/08
Posts: 2647
Loc: Iowa City, IA
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fyi, shop manual diagnostic aids for random misfires are:
check grounds (clean and tight) abnormally low maf reading causing engine to run lean damaged accessory belt or device connected via accessory belt vacuum leak or malfunctioning crankcase ventilation valve fuel pressure injectors bad fuel leaking egr dirty o2 sensor
what were the operating conditions when the check engine light came on?
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'99 GTP, L36 bottom, XP cam, Headers, 3.29 gears, FWI, Powrtuner
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#98786 - 06/10/09 05:04 PM
Re: BAD misfire **update* RESOLVED!!!
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Member
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Registered: 04/08/08
Posts: 2647
Loc: Iowa City, IA
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Originally posted by r.s.hutchinson: I thought you were going to keep your opinions to yourself? LOL j/p.
we made up. Tim, misfire only at idle/low rpm and low ECT points to dirty o2 according to shop manual. Supposedly you just need to run at > 15g/s MAF at operating temperature to eliminate the deposits. did the CEL just illuminate, or flash?
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'99 GTP, L36 bottom, XP cam, Headers, 3.29 gears, FWI, Powrtuner
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#98787 - 06/10/09 05:04 PM
Re: BAD misfire **update* RESOLVED!!!
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Member
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Registered: 10/23/07
Posts: 3523
Loc: Milwaukee, WI
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the car was idling when p0300 popped up. i had over 50 misfires.
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Current: 2004 Dale Jr Monte SS Old: 01 3.2 intercooled GT RIP
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#98788 - 06/10/09 05:08 PM
Re: BAD misfire **update* RESOLVED!!!
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Member
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Registered: 10/23/07
Posts: 3523
Loc: Milwaukee, WI
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no flash. just illuminated.
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Current: 2004 Dale Jr Monte SS Old: 01 3.2 intercooled GT RIP
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#98789 - 06/10/09 05:14 PM
Re: BAD misfire **update* RESOLVED!!!
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Member
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Registered: 04/08/08
Posts: 2647
Loc: Iowa City, IA
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when did you last change o2?
good that no flashing, flashing indicates cat damage possible.
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'99 GTP, L36 bottom, XP cam, Headers, 3.29 gears, FWI, Powrtuner
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